Furnace.



L. E. G. HUBBRT.

FURNACE.

APPLICATION FILED AUG. 1. 1912.

1,133,561 Patented Mar. 30, 1915.

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AWovnz PATENT onrion.

LiLY E. e. HUBERT, or LOS ANGELES, CALIFORNIA.

FURNACE.

Specification of Letters Patent.

Patented Mar. 30, 1915.

Application filed August 1, 1912. Serial No. 712,718.

To all'whom it may concern Be it known that I, LILY E. G. HUBERT, a citizen of the United States, residing at Los Angeles, California, have invented a new and useful Improvement 1n Furnaces, of which the following isa specification.

My invention relates to a new and novel construction of a furnace designed for house warming in which gas is used as a fuel.

A number of beneficial results are attained in my construction some of the pr1ncipal results being, highest efiiclency, simple and inexpensive construction, and the 1mpossibility of gas collecting while the furnace is not in use and exploding the furnace when an attempt is made to light the burner. The manner in which I have attained these and other beneficial results is illustrated in the accompanying drawings in which Figure 1 is a front elevation of the furnace complete. Fig. 2 is a longitudinal section taken on the broken line b7) 1n F 1g. 1. Fig. 3 is a transverse section taken on the line cc in Fig. 2. Fig. 4: is a fragmental section taken on the line aa in Fig. 1.

Throughout the several views like characters indicate like parts and referring to the details of construction 1 is the outer jacket of the furnace. This acket, shaped substantially as shown, supports the reg ster pipes 2 of which there may be any desired number. Suitably supported within this outer jacket is an inner jacket 3, which, with the rectangular flues 4, 5, 6, and 7 forms the combustion chamber. The fines are preferably made rectangular in shape and are placed in tiers with the vertical spaces between them in staggered relation to each other. These spaces are indicated as 8 and constitute the fiues through which gases pass in going from the burner 9 to the vent pipe 11 in the direction indicated by the arrows.

The heat imparted to the flues 4, 5, 6, and 7 by the fire and hot vapors passing through the spaces 8 between said fiues is absorbed by the fines and radiated from their lnner surfaces to the cool air passing through them from the lower and open end to the heat chamber at the upper end and on top.

The top of the inner jacket slopes upward and the higher end is farthest removed from the vent 11. This causes the hottest vapors to gather under the register pipes 2 and as the vapors transmit their heat to the air in the chamber 10 they pass down along the under side of the top of the inner jacket to the vent 11. For the purpose of preventng gas from collecting in this portion of the inner jacket where it would be above and away from the draft of the vent 11, and auxiliary vent 12 is provided, connecting tlus raised portion of the jacket with the main vent 11. lVithout this vent there is always danger of an explosion as it is al ways possible for gas from a leaky gas cock or a gas cook left partly open, to escape and gather in the highest possible portion of the combustion chamber, where it will accumulate and not escape. Upon lighting the gas at the burner the gas so collected would explode and wreck the furnace. The vent 12 although it gathers only a small portion of the hot vapors while the furnace is in operation serves as an outlet for the escape of any gas which might gather there while the furnace is not in use.

In a gas furnace it is found desirable to remove the burner at frequent intervals for cleaning and this is rendered easy by the construction hereinafter described.

13 is a mixing chamber formed on the end of the burner 9. Gas enters this chamber through a nipple 18 inserted through an opening 14: in the front end of said mixing chamber. Air enters the mixing chamber through the vents 15.

19 is an ordinary gas cook by means of which the fiow of gas is regulated. The burner 9 enters the combustion chamber through an elongated opening 17 The inner end of the burner 9 is bent upward and back and passes through an opening 23 in the back of the jacket 3. The end of the burner is closed with a cap 25. The bent portion of the burner is designated as 24:. It will be seen that the burner is supported at two places, at the front on the nipple and at the back in the opening 23. WVhen it is desired to remove the burner it is slipped inward until the mixing chamber 13 is free from the nipple 18. The outer end of the burner is then raised to the top of opening 17 where it is free of the gas cook 19 and may be readily withdrawn from the furnace.

21 is the bottom of the inner jacket 3 and is provided with perforations 22 which admit fresh air to the burner for maintaining combustion. The upward inclination of the fiues 1, 5, 6, and 7 accelerates the passage of the air being warmed, from the outside to the chamber 10.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is: j (j In a furnace, thecor nhina tionofanoiit'ei jacket, an inner jacket supported Within said outer jacket, said inner jacket having an upwardly inclined top; a vent connected withthe lowerend of thetop of the inner jacket; and a suitable auxiliary "Vent onnecting the raised end of said jacket with 'the aforesaid vest, "and 'iidapted to prevent waste igase's from gathering "in "the "top of saidinne'r jacket; flues extending -1ongitudi man through "the inner jacket, havin' "neath "the spaces between them for the passage of heated vapors; a source of heat" located beflues; and register pipes connected with the outer jacket and adapted to convey the heated air from the chamber formed between the inner and outer jackets. In witness that I claim thefo'reg oing I have heruntosubscribed my name this 12th day of July, 1912. y y j I G. 'HUBERT. In the presence (if-"- -*Ei'\iiL Mormon. 

